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DRIVERS' PERFORMANCES IN WAY-FINDING WAS STUDIED BY OBSERVING 20 DRIVERS AS THEY DROVE TO TWO UNFAMILIAR ADDRESSESS, 11 AND 14 MILES FROM A STARTING POINT. THE DISTANCE TRAVELED, SPEED, AND TIME SPENT WERE COMPARED WITH THE PERFORMANCE OF A CONTROL GROUP, IN WHICH THE DRIVERS RECEIVED ON-ROUTE GUIDANCE INFORMATION. THE PERFORMANCE OF THE OBSERVED GROUP WAS NOT EFFICIENT. TO GET TO THE SAME DESTINATION, DRIVERS TRAVELED ALMOST HALF AGAIN AS FAR AS THE CONTROL GROUP, ACHIEVED LESS THAN TWO-THIRDS THE SPEED, AND TOOK MORE THAN TWICE AS LONG TO COMPLETE THEIR TRAVEL. THE EVIDENCE INDICATES THAT MOST TIME IS LOST IN THE AREA OF THE LOCAL ADDRESS. ALMOST ALL DRIVERS ADOPTED THE STRATEGY OF GOING TO THE LOCAL AREA AND ASKING SERVICE ATTENDANTS THERE FOR DETAILED ROUTING INFORMATION. SIX OF THE 20 DRIVERS STARTED OUT WITHOUT OBTAINING ANY ADVANCE INFORMATION AT ALL. /AUTHOR/